Starter-pawl tripper for magnetos



March 2,1926. 1,575,066

w. E. LACE Y STARTER PAWL TRIPPER FOR MAGNETOSE Filed May 8, 1925 llfzizzarr 2127/2? Mg 9 Marzggx;

l Be; i'tlknovvn that; I, wrms jn. "Iii-(ma a gjitizen f the"..United Q ISta-tes residing, at

- Royal, in the equnt g fon nd State of IoWa haVe,i11vented a certain new and use;

i 'fill Starter-PaWl Tripper 6 Magnetos,

Whichthefollowing" is a s pccification. y

. Thelobject of my'inventionfisto provide a starter p wl :tripper for magnetos o tsimple,

1 v a a,

Another object :is to provide means for v operating myltripper mechanism.

durable and-inexpensive construction.

Still a 'furtherfobject 's' to p wh reby y;trip mechanism will e automatic'ally ,renderedinoperative when the say n a e's; iie park control lever is withlth e se' and other objects in' view, invention consists f n the construction, arrangement and combination of the various.

parts ofmy device; whereby ftlie obj ects contemplated are attained, as hereinafter more 7 .t e et q, a. Figure 2 is a 'view'of the tr ppertaken on H the line'2, 2 of Figure 1.

5-15 of Figure fullyjs'tifqltmpoinfed out in my 01 aims. n d

. illustrated} in the; ac bompah n pdmswmgs in ivvhichz'i'j 1 so Figure 1 is? I 1 ClilOiliJl Figure 5 ,is' a Iiview fon the line i for operative'lyconnecting parts of-my tripper tdthespark 'contijolir o'd of-the tractor.

lOn theaccompanying drawing lhave (used the fr'e if'erence numeral 10f'to indicate a tractorf-Fori furnishin -the sparkfforfex l plodi'ng thechargeini'the cylindersia magneto 11 is usually provided.

In large; tractors, such as a McCormick- Deei'ing as. illustrated, 5 it 1 is diflicnlt, when 7 starting; to rotate the" crankshaft fast enough to em-spa k from" the magneto 11 which i i t n n'gfl h t explode" the gas mixture inflthe fcyli ndersg For thisfireason, large tractors-havetanimpulseistarter type of nagnetoi:

p I elevationfofniy tripper as attached a'ltriactor showing. its relation mgieg-r wmmrm' non MA enEros.

' v fn iieation ind May s, 1925. Serial n). 281,815 I:

.r In operation; thedriver ofthetractoigibefore starting,;engages,the stud 12 of the rod 16,' vvhich passes through a hole in the bracket 17 attached to the magneto, "1 4 In Figure2, the paWl-13fis shown in; dis-1 l p "engaged "position While in Figure 4, it is rovide a starter pawl 13 ivith-hisfinger and movesit 1 from theposition in Figure 2 to the position in liigure The pawl, l3f'is held either} against the stop 14 or the periphery of the disk 18 by a spring 15 of the fover center? type. The spring 15 is held in position on a i I shownin position for engaging the notch 19 of the disc 18 and thereby causingi'the fin pulse action. This action, 7 I Will-11617 de;

scribe, becauseit forms noipartfofmypres} x entinvention andis common to impulse inaggf netos such as the Splitdorfw i This impulse action continues untilthe engine has attained speedofabout 200 T P. 'M. at which time the'pa'wl 13' automati cally assumes thevposition shown in" Figure The foregoing is the ordinary tractor. ar

'80 7 rangement and it is always necessary to raises- '7 the hood each time the 'engine'is started in] I,

doing.

My invention consists in a device for auto order Ytotrip the starting pawl as a severe backfire in the engine is'the result'of not so matically tripping the starting pawl 13 by manipulating the hand lever on the spark control tube 2 1. I have provided a" bar25 The bar 25is. clamped by a U bolt 28 to around the carburetor control rod 31 and thereby permits thebar 25 to, be moved simultaneously with the sparkjcontrol tube I the lever 27 which is secured tothe tube 24;, j 1 -A U bolt'2'9 clamps-a shortb'ushing' 30 to the bar .25. .The bushing 30 -fits floosely Althougli'I have illustrated a means of operatingmy' device from the spark control rod of a tractor, it is to be understood that" anymechanical equivalent may "be substi- V tuted for the bar 25 or an independently operated control rod couldbe used for mov ing the bar 33.

When'stoppmg an engine equipped with an mpulse starter magneto, the spark control lever on the dash isn'aovedto" fully retarded position hich; grounds; the n ag- I neto; tt'ertby stopibihgthesperk; Themesirie' V for groufidiiig'theisparkipart of thernztgneto and is therefore'not illustrated on thedrawings. The 'positionflojf the ban, 33 5711631 1 the miztgrieto is grounded' is'illustrated :iri dotted'lihes 'in'Figure2:

M 111, starting theengme; the spark control lever 'is advancectfto proper startln'g posret-@111: 39 is iir tecr to an eer. 39- 1; the

IIlTthis co'nhetion; iitf isfiveH to mention gthatthe spring'38 'ie hittehetrohg'e'r than the Spring 43 which is" rhefely for the purpoee 1 The mov ihg 4E1: the 1.2 on the Start-er pawl 1.3, and 'causesit tojas "of returning"thefpztrt's t0}their"initia1 posr- '6111 f The spring ifsjfalso forthie purpose, o. I -Whichjis c'on eeted to; a pin 42 onone of can be. acllj'ustedjlto' fxvariou sli jmtgnetos or byineemsof apjin 4A is"corineeted to. one

of tiyvill' oimgeth eml' tfi tofsti ing to the fight: [and disengage I the shoulder 3'4; tfron l' I the Cross pieoe 3'5,-; TheftripperIrriechenism 'Will. then be brought baok, o;f.1n1t1'a1 posh tion' 537' the "springefizf ah'ct 4:3,"a'ht1 thejbar 33 ie free toLmove bietweeh gthe ar1nsg3'6 through it's entirev rangezfts j 111115 ,trated in Figure 241 3 1 'Aphirahty 0f holes;tit-'pggvided iiifbhe' f th e ar ms itt} forthe' link 4 5 so that aid justmenfiean bej mjztd'e fQrf f Q g -Q V "should erfit immediately fifterjthepzuvl I istrip-ped and before the mag rieto i st fu lly 38 compen atestfbr' the'oi er movement of the I jfi,'575,066 'to the be1teran1'r39 and'ait 38 to ohefofthe'bi "blocks; An extension 49 spacesthe lower end to other-types ofw ctbrs:erkengines;

is tripped zut'omatica'lb byrriy devi'c'ej when, 1 Wherr stopping and adxfahcifig whehiistar't I" beuig operatively attaehed therotoi-is 'th said" magneto, said 'm'eanisWcomp ri h fty"- opivoted to said frzm e'whereby moverheh 0f means for trippingithe stertil lg pawr of arms The spring "3s 'iscofirieetaf at as armsBG. V I have ShDWIrthe frame 47 having arr ex tension t8zwhich is bolted to,;the engine) from the-crank ease, and an extension 50,;5' bolts tdthe-goverhor housing. These festerri an l m dified o a ta ment:

t lip h t grp iby 'hend: 7' Hating on ceheen irretallech thei'drj. forget that he has an impulse "stzirt-rfas it ing are necessary operations, end ei'? lw tie 1 .r r z ,i t i h i my f meshi 'th i 0 i+ v strtietionjfah'cl', arrangement bflthe'tarioh's parts i of 'ih'xjention; jvith out depztrtihg 9 ro 111 1 3 'I i ii idll iIi r f int-m 'v 'n' n; d i is mwmw w hy y c ?ie ysmod fi t u s tl tur'e' or use of meehzmical eq'iut tlehts which v mayi be reasonably j inoludd lwithi v heir I claim as' my invjention 1. In 'o'ombi'natiohg w lth ea 1 0 5 'fi oiiip i gi t tsfiiilt giil wlfg' f .frz tme supported on said engine; an arm olam'pedto the spark control mechzftj'liism of v SQlld engine, atbar plvotec lft'o "salcl gtrin; shoulder ion 'szu d bar "for engagin versaid sp arkfcontroli'meohzphism' willrnot e Said lever for engaging said starter pawl. V-

2. I11 combination 'Withj anf ",len gijne, equipped with an impulse 'stzxigtr ma'gheto 7 fsaid magneto Qsaicl anea 's comprishlg fa time supported on" said? engine; arr,arm- {e1uhped to thejs'p'ark control me c'h'a -nirn of said-Keri g'ine; ztber pivot L on 'sai'd h ztr*f spark 'eohtrolfhiechanislrr will mave Said lever for engaging, saiclfistlztrter PELWL'jib H crank pivQteclgOn said frame andlconriec'ted I by a link tdsziid'l'eyr, whereby sifid hell .cmnk will disengage fthe shoulder ofsai'd 'barffrom' jsztidlever atef'predetermined;poettion of said spark control Iriech'a risnfi. I f

f3. In Q combl ietlon' fwith I @11 {'engine,

equipped with. @ni impul's efsttrteryniegnetq. 7

means for'tnp in-g the startih ztwl o f Said magneto, saidgnreans comprising-(a. 'fralh supportedon sziide'ngine, an arm e1a n 115ed to the spark control mechanismof sai'd e11 framei supported on-said engine, an clamped to the spark'control mechanismbf;

if gi nelja pivoted to said 'arm, a shoulder on said bar-for engagingfa lever pivoted to P said spark control mechanism; 14.]111 combination} ;with .an 7 "equippedwithan-impulsei starter magneto, '1': Vmeansfortrippingthe starting pawl of said '15Ymagneto, said meansj comprising a frame 7 'su'pported' on saidIengine, an arm clamped- {to thefspark; controli nechanismof said en- 1 said framerwhereby movement of the spark control mechanism-Twillmove said lever for engaging said starterxipawlf, a bellf crank pivoted'jon said framefandconnected by a I link to saidlever, whereby said bell crank will clisengagethe shoulder ofsaidbarfrom said" lever after said' lever'has; engaged said starter pawl at a predetermined position of,

I engine,

, fgine, abarpivoted to said arm, a shoulder *o'n' saidbar' for engaging' a lever pivoted. 2 0

to]said frame,abell crank pivoted to said 1 frame having one end operatively connected to said lever and the other endgoperatively connected ftoj starting pawl engagin arm I uwhereby-said startingflpawl engaging arm;

' control mechanism;

5. In, combinationff with e ui ped with janimpulse starter fmagneto, [means for: tripping flthe starting pawl of will be actuated upon. 'movementof said any engine,

said; magneto}; saidmeans comprising {a saidiiengine, a barfpivoted to said arm; a

H shoulder on ,saidfibar for engagingl a lever [pivoted to 'said,fr'ame,'.la bell crank pivoted to said frame'havi'ngf one-endvoperatively connected by a spring to said lever andfthe 40 s pponmovement of spark control mechfotherend operatively'connected to a start"- ing pawlengaging arm whereby said starting pawl-rengaglng arm: will be actuated 6. In combination with an engine,

7 equipped with animpulsestarter magneto,

magneto said means comprising a frame] supported'on sa d engine, 'an arm clamped J I V to;the spark,controlfmechanism of said; engine, a bar pivotedlto said arm,a shoul i 5 ed to'said frame, au bell crank pivoted to said meansfor-tripping the starting pawl ofvsaid de'r onsaid barfor engaging a lever pivotj frame having one end 'operatively connected 7 j t said lever and the "otherend operatively connecteditol a startingpawlengaging arm ,gagement with said lever after said start whereby said starting pawl engaging arm will be; actuated upon, movement of said" spark control mechanism, a second bell crank pivoted'to said frame and'operatively connected to said lever,'and having an end adapted to force said shoulder on said'bar from engagement with said lever after saidv starting pawl engaging arm has tripped said starting pawl. v i Q 7 I 7. In combination with anengine equipped with an impulse starter magneto, means for tripping the startingfpawl of said magneto, said means comprising. a,

frame supported on said engine an arm clamped to the spark control I mechanism of said engine, a bar'pivotedto said arm, a shoulder on said bar for engaging a. lever pivoted to said frame, means connected to j said 'bar for causing said, engagement,. a bell: crank pivoted to said frame having one end operatively connected' toflsaid lever and th'e other'en'd operatively connected to] I, I

a startingpawl engaging arm whereby said starting pawl .engaglng'arm Wlll. be actu-- ated upon movement of said spark control 7,

mechanism, a secondj ball crank pivoted to force said shoulder on said, bar from ening pawl engaging arm has tripped'said starting pawl. r 1

s'aid frame and operatively connected to i said lever, and having an end adapted to 8i "In combination with an" ifengine, I

equipped with an impulse starter'magneto, meansflfor trippingthe 'sta'rting'pawl of said magneto, said means comprising a frame supported on said engine, an arm clamped to the spark control mechanism of said engine, a bar pivoted to said arm, a

shoulder on said bar for engaging a lever i WILLIE E. LACEY. 

